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Science News Archive March 2024 - Page 39


Page 39 of 42

Perturbations in redox status, biochemical indices, and expression of XBP1s and NOX4 in the liver of channa punctatus following exposure to Mancozeb

The study found that Mancozeb exposure leads to increased reactive oxygen species, redox imbalance, and liver biomarker elevation. XBP1s and NOX4 gene expression is also upregulated in response to MZ toxicity, indicating potential for early bio-indicators of endoplasmic reticulum stress.

SourceXia & He Publishing Inc.·JournalGene Expression·DateMar 5, 2024

New strategy boosts direct electrolysis of dilute carbon dioxide

A new strategy for direct electrolysis of dilute CO2 has been proposed, using a molecular enhancement method to improve performance. The approach involves modifying CoPc electrodes with poly(4-vinylpyridine) to create a reaction microenvironment that effectively captures and converts CO2 from flue gas.

SourceDalian Institute of Chemical Physics, Chinese Academy Sciences·JournalACS Energy Letters·TypeCommentary/editorial·DateMar 5, 2024

New method measures the 3D position of individual atoms

Researchers at the University of Bonn and Bristol have developed a new method to measure the 3D position of individual atoms using a single image. The technique utilizes an ingenious physical principle to determine the vertical position of the atom, allowing for precise control and tracking in quantum mechanics experiments.

SourceUniversity of Bonn·JournalPhysical Review A·TypeExperimental study·DateMar 5, 2024

Toward understanding sperm quality

A new screening system enables researchers to investigate sperm cell development and health at the molecular level, identifying a crucial gene Rd3 for maintaining sperm integrity during development. The study uses CRISPR technology to disrupt genes in living animals, revealing its significance in regulating oxidative stress.

SourceKyoto University·JournalCell Genomics·DateMar 5, 2024

Liquid lens based holographic camera for real 3D scene hologram acquisition using end-to-end physical model-driven network

A new holographic camera using a liquid lens and end-to-end physical model-driven network can capture high-quality holograms of real 3D scenes in 150 milliseconds. The camera solves two major bottlenecks of existing holographic technology, enabling fast acquisition and improved image quality.

Conservation actions for SA’s white shark population now a matter of urgency

A group of marine biologists challenge the notion of a stable white shark population shifting eastwards along South Africa's coastline. They argue that data cannot support population stability or redistribution claims, citing issues with dataset presentation and the onset of declines predating orca appearances.

SourceStellenbosch University·JournalEcological Indicators·TypeData/statistical analysis·DateMar 5, 2024

Predicting who will experience aesthetic chills

Researchers developed a model predicting aesthetic chills with 73.5% accuracy, using data from 2,937 people and emotional stimuli clips. Factors such as personality traits, demographics, and contextual conditions were found to correlate with high probabilities of experiencing chills.

SourcePNAS Nexus·JournalPNAS Nexus·DateMar 5, 2024

Game-changing sensor unveiled for spotting chemical threats

A new gas sensor has been developed to detect chemical warfare agents (CWAs) with high sensitivity and rapid response. The passive wireless sensor system uses surface acoustic wave (SAW) technology to identify substances like dimethyl methylphosphonate (DMMP), offering a reliable means of early CWA detection in hazardous environments.

New technique developed for measurement of temperature distribution inside single catalyst particle

Researchers developed imaging technique with 800nm spatial resolution to measure three-dimensional temperature distribution inside industrial zeolite-catalyst particles. The technique revealed utilization of active sites and evolutions of reaction intermediates during MTO reactions.

SourceDalian Institute of Chemical Physics, Chinese Academy Sciences·JournalJournal of the American Chemical Society·TypeCommentary/editorial·DateMar 5, 2024

Isomerism can control and increase the diversity of structure of covalent organic frameworks, emerging nanoporous solids

Scientists at Tokyo Institute of Technology discovered a method to generate three types of structural isomers in 3D-COFs, increasing their diversity and potential applications. The creation of these isomers allows for tunable properties such as density and pore size.

SourceTokyo Institute of Technology·JournalJournal of the American Chemical Society·TypeExperimental study·DateMar 5, 2024

What makes black holes grow and new stars form? Machine learning helps solve the mystery

A study using machine learning classifies galaxy mergers and finds that mergers are not strongly associated with black-hole growth. Cold gas at the center of the host galaxy is necessary for rapid growth, suggesting a more complex relationship between galaxy evolution and supermassive black holes.

SourceUniversity of Bath·JournalMonthly Notices of the Royal Astronomical Society·TypeComputational simulation/modeling·DateMar 5, 2024

Gender gap on Wikipedia

A study analyzing Wikipedia's content from 2007 to 2022 found significant gender gaps in authorship, academic disciplines, institutional affiliations, and readership. The research highlights the need for diversifying contributions and addressing the systemic problems perpetuating these biases.

SourceUniversity of Barcelona·JournalProfesional de la información·TypeObservational study·DateMar 5, 2024

Nosy chemistry

Researchers at the University of Pittsburgh have developed a small-scale system that forms three-dimensional patterns, which serve as chemical fingerprints that allow chemicals in solutions to be identified. The system utilizes fluid flows and flexible posts coated with enzymes to generate distinct visual patterns.

SourceUniversity of Pittsburgh·JournalProceedings of the National Academy of Sciences·TypeComputational simulation/modeling·DateMar 5, 2024

Unveiling the sun from behind the clouds: Reshaping the chemical image resolution

A new Raman spectral preprocessing algorithm enhances biomedical applications by improving noise removal and baseline correction. The two-step strategy, RSPSSL, uses self-supervised learning to achieve high-fidelity denoising and visualization of clinical tissue samples.

Magnetic revolution: New soft magnetic materials for a high-frequency future

Researchers from Songshan Lake Materials Laboratory have developed amorphous soft magnetic composites with improved properties for use in next-generation electronics. The critical state approach enables the creation of strong yet efficient magnetic materials, paving the way for more efficient power transmission and storage.

SourceSongshan Lake Materials Laboratory·JournalMaterials Futures·TypeExperimental study·DateMar 5, 2024

Food web flexibility through time

A 8-month study on a warm-temperate grassland ecosystem found that some predators switch prey and detritivore prey contribute to network stability. These 'network coordinators' offer a measure of flexibility to the overall network architecture.

SourcePNAS Nexus·JournalPNAS Nexus·DateMar 5, 2024

Electrolyte cation types control electrochemical reactions on an electrode surface

Researchers discovered that electron and proton transfer mechanisms during oxygen reduction reactions vary depending on electrolyte cations, enabling improved energy conversion efficiencies. This breakthrough suggests optimizing reaction pathways without using costly electrodes.

SourceNational Institute for Materials Science, Japan·JournalAngewandte Chemie International Edition·TypeExperimental study·DateMar 5, 2024

PD-L1 expression guidance on sintilimab vs. pembrolizumab with/without chemotherapy in untreated patients with advanced NSCLC (CTONG1901)

The study found that sintilimab was efficacious and well-tolerated in treating advanced NSCLC, with a confirmed ORR of 51.4% in the monotherapy arm. Treatment-related adverse events were consistent with previous phase III studies, but sintilimab had a higher incidence of rash compared to pembrolizumab.

SourceScience China Press·JournalScience Bulletin·DateMar 5, 2024

Having self-control leads to power

A new study from UC San Diego's Rady School of Management found that individuals with high self-control are perceived as more powerful and better suited for powerful roles than those with low self-control. People who act in line with their goals, such as meeting ambitious reading goals, are seen as more powerful.

SourceUniversity of California - San Diego·JournalJournal of Personality and Social Psychology·TypeExperimental study·DateMar 5, 2024

Antarctica’s coasts are becoming less icy

Researchers from the University of Otago have found that areas of open water along Antarctic coasts are growing in area as the climate warms, creating opportunities for non-native plants and animals to establish themselves. This could have significant implications for native Antarctic coastal ecosystems.

SourceUniversity of Otago·JournalProceedings of the National Academy of Sciences·DateMar 4, 2024

Photosynthetic secrets come to light

Researchers at John Innes Centre used cryo-EM to visualize the structural architecture of chloroplast RNA polymerase and build a detailed atomic model. The study reveals new insights into transcription, a fundamental step in making photosynthetic proteins, and how these proteins interact with DNA and mRNA.

SourceJohn Innes Centre·JournalCell·DateMar 4, 2024

Researchers investigate immune response of a man who received 217 Covid vaccinations

Researchers at FAU investigated a man who received over 200 Covid-19 vaccinations, finding that his immune system remained fully functional and even showed higher concentrations of antibodies against SARS-CoV-2. No negative effects were observed on the immune response against other pathogens.

SourceFriedrich-Alexander-Universität Erlangen-Nürnberg·JournalThe Lancet Infectious Diseases·TypeCase study·DateMar 4, 2024

Discovered a RNA molecule that helps prevent DNA replication errors

A long non-coding RNA called lncREST has been identified as a crucial component of the stress response during DNA replication. Its absence leads to impaired stress signalling, resulting in severe DNA defects and cell death. The discovery opens up new avenues for developing anti-tumour therapies.

SourceCentro de Investigación Médica Aplicada (CIMA) Universidad de Navarra·JournalNature Communications·TypeNews article·DateMar 4, 2024